Means for cooling fan-shaft bearings of driers



April 20 1926.

H. BOGATY MEANS FOR COOLING FAN SHAFT BEARINGS OF DRIER Filed April 14,

Patented Apr. 20, 1926.. v

HHZMANN BOGATY, OF lEI-IILADEIJEHIAy PENNSYLVANIA, AS SIGNOR TO PROC'IOR&

SCHWARTZ, INCORPORATED, OF PHIL TION OF PENNSYLVANIA.

ADELPHIA, PENNSYLVANIA. A CORPORA- MEANS FOR COOLING FAN-SHAFT. BEARINGSOF DRIERS.

Application filed April 14, 1922. Serial No. 552,808.

1 '0 all whom it may concern:

Be itknown that I, HERMANN BOGATY, a citizen of the United States,residing in Philadelphia, Pennsylvania, have invented certainImprovements in Means for Cooling Fan-Shaft Bearings of Driers, of whichthe following is a specification.

My invention relates to certain improvements in drying apparatus, inwhich heated air is circulated and in which fans are used as thecirculating means. In drying apparatus of this type, the fan shaft andits bearings are located in aportion of the drying chamber, or thecirculating chamber, and itis difficult to keep the bearings cool andthe lubricant in proper condition.

One object of my invention is to provide means for enclosing the fanshaft and its bearings and to keep them cool by the circulation of coldair through the enclosure.

A further object of the invention is to utilize the fan as a means fordrawing cold air through the enclosure for the fan shaft and itsbearings. i

In the accompanying drawings:

Fig. l is a sectional elevation through a drying apparatus at one of thefans to illustrate my invention; and i Fig. 2 is a sectional view on theline 22, Fig. 1.

Referring to the drawings, 1 is the casing of a drier. 2 is a partitionseparating the drying chamber a from the heating, or circulating,chamber 6, in which heating coils of any typeare placed. In thepartition 2 is a fan opening 3. Located in this opening is a fan 4,mounted on a horizontal shaft 5 adapted to bearings 6, 6 of any suitabletype. In the present instance, the bearings are shown as ball bearings.Each bearing is mounted in castings 7, 7 The casting 7 is located in anopening in the outer casing 1 and the inner casting 7* is secured to aframe 8 within the heating chamber.

9 is a cylindrical enclosing casing for the fan shaft 5. This casing ismade of wood in the present instance and is provided through the casing9 and pipe 11. cooling the bearings 6, 6 The air passing through thecasing 9 and pipe 11 is used. as part of the fresh air which is added tothe heated air in circulation.

The lubricating cup 12 for the inner bearing can be located on theoutside of the drier and the lubricant can be conveyed to the bearing byan inclined tube 13, Fig. 1, v

The cylindrical casing not only keeps the bearings cool, butalsoprotects the bear- 111S a 'amst harmful fumes and ases.

'-which are liberated when certain materials arebeing dried. I v plVhile the shaft and enclosing casing are shown in a horizontalposition, it will be understood that the casing may be arranged inconnection with a vertical fan shaft, or it. can bearranged at anyangledesired.

I claim:

The combination in a drier, of a main casing enclosing a chamber inwhich heated air is in circulation; a shaft extending into the chamber;a circulating fan at the inner end of said shaft; an inner bearing andan outer bearing for the shaft; an enclosing-casing for the bearings andthe shaft between the bearings, the space within said enclosing casingbeing open at the outer end. to admit fresh air and closed at the innerend; and a pipe connected to the inner end of the last mentionedenclosing casing and extending to the suction side of the circulatingfan to cause a circulation of fresh, cool air past the bearings.

- HERMANN BOGATY.

